RL

Nearly Optimal Latent State Decoding in Block MDPs
First theoretical analysis of model estimation and reward-free RL of block MDP, without resorting to function approximation frameworks. Lower bounds and algorithms with near-optimal upper bound are provided.
Yassir Jedra, Junghyun Lee, Alexandre Proutière, Se-Young Yun
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Nearly Optimal Latent State Decoding in Block MDPs
(Statistically/Theoretically) Principled Approaches to LLM Reasoning
(tbd)
Junghyun Lee
Collaborative Multi-Agent Bandits
specific topics tbd
Junghyun Lee
Statistical Learning in Structured Markov Chains and MDPs
Project #1. Clustered State Space Nearly Optimal Latent State Decoding in Block MDPs Accepted to AISTATS 2023 Joint work with Se-Young Yun (KAIST AI) and Yassir Jedra, Alexandre Proutière (KTH EECS).
Junghyun Lee
Statistical Problems Related to (LLM) Alignment and Preference Learning
(tbd)
Junghyun Lee